/**
* Sorts the map primary keys, if necessary.
*/
private function lazySortPrimaryKeys()
{
$this->map->sortPrimaryKeys();
$this->primaryKeysSorted = true;
}
/**
* Returns whether the collection is empty.
*
* @return bool Returns `true` if the collection is empty and `false`
* otherwise.
*/
public function isEmpty()
{
return $this->map->isEmpty();
}
/**
* @expectedException \OutOfBoundsException
*/
public function testSortSecondaryKeysFailsIfNotFound()
{
$this->map->sortSecondaryKeys('foobar');
}
